Reports of the Hamas leader’s hospitalization also came hours after he greeted thousands of Gazans in a central Gaza square in a massive “victory rally” following the signing of a long-term ceasefire with Israel.

According to the Ma’an news agency, in his speech, Haniyeh hailed the people of Gaza and the “resistance forces” for their steadfastness in the fight against Israel.

"Those whose blood was spilled and the martyrs were the fuel of this victory," Haniyeh said during the rally, emphasizing to the crowd of thousands that the resistance had been preparing for the battle for years.

"It is not possible to express this victory with words and speeches," he added, according to Ma’an.

"The victory is beyond the limits of time and place. This battle is a war that lacks a precedent in the history of conflict with the enemy," he said, stressing that the group was preparing for the "ultimate battle" for the “liberation of Palestine.”

"The war began with fire on Haifa and ended with fire on Haifa," he told the crowd.

"The Palestinians who couldn't celebrate Eid al-Fitr because of the fighting and because they were on the battlefield, today celebrate the celebration of victory," declared Haniyeh.

On Tuesday, several senior Hamas and Islamic Jihad leaders appeared in public shortly after the Gaza truce took hold, the first time they had done so since the conflict began on July 8.